Seedance 2.5

Yes. ByteDance launched it on July 31, 2026, and it's live on HeyOz — pick Seedance 2.5 from the model list and generate.

The latest video model from ByteDance's Seed team, released July 31, 2026. It generates a 30-second clip in a single pass, takes up to 50 references across image, video, and audio, generates native audio together with the picture, and lets you edit a finished shot down to the timestamp.

Four things. Duration: 30 seconds in one pass, up from 15. References: up to 50 inputs — 30 images, 10 video clips, and 10 audio tracks — up from 12 files. Editing: timestamp-level edits and background swaps on a finished shot, beyond 2.0's edit-and-extend. And a cleaner, less synthetic look across textures, skin, lighting, and colour.

Up to 50 files in a single generation: as many as 30 images, 10 video clips, and 10 audio tracks — product shots, packaging, talent, a voiceover or a music bed. Point to each one in your prompt to steer where it lands.

Yes — audio and video are generated together in the same pass, so sound is in sync with the footage rather than added afterward. You can steer it with a reference track, or switch it off for a silent cut.

On HeyOz, Seedance 2.5 renders up to 1080p — 480p, 720p, and 1080p. You'll see a '4K' figure quoted for 2.5 in some write-ups; that number actually belongs to a separate Seedance 2.0 upgrade announced around the same time, and the two have been mixed up across a lot of coverage. We'd rather state what you actually get here.

It runs on HeyOz credits, like every model on the platform. A longer clip or a higher resolution costs more than a short draft, so it's worth generating a few seconds at 480p while you dial in the prompt, then taking the winner up to full length and 1080p.

Up to 30 seconds in a single generation. For a longer piece you can extend a clip across multiple rounds, and it holds the same camera, cast, and lighting across the extensions.